router(8) on Linux
The text a598dc14de94, as Debian 2.2 (Potato) shipped it.
zmailer message routing daemon
Flags it lists
-
-L -
-N -
-P -
-S -
-V -
-W -
-d -
-f -
-i -
-k -
-m -
-n -
-o -
-r -
-s -
-t